Second: Although it can be detected, whether it can be marked by duplicate checking depends on whether the sentences before and after the formula are similar to the papers included in the duplicate checking platform.

Thirdly, different duplicate checking platforms and duplicate checking libraries have different scales, and the duplicate checking results are also different. As far as I know, the domestic CNKI duplicate checking platform is relatively strict.

Fourth: you must check the duplicate yourself before replying, and then hand it over to the school to check the duplicate. Every school has erased some students' defense qualifications through checking. The establishment of duplicate checking standards will be different in different schools and even different departments.

Fifth: duplicate checking does not mean how many words in your paper are repeated with other papers. It depends on the similarity of the paper and whether it is plagiarized. If you copy the whole paragraph of the last paper, the repetition rate will definitely be high.

Sixth: mathematical formulas are established by convention, and there is no plagiarism. It depends on the paragraph where the formula is located, and whether the point to be expressed is to copy the sentences of previous papers, which is the purpose of duplicate checking.

Seventh: you can see it at a glance by looking it up online.